Adding an HDD to a slim PS2

Yeah, the new slim PS2 is sexy.. But you cant add an HDD to it. That means that you cant use the HD Advance CD to run your backups... That is until Automan found a way to hook a hdd to it. Click read more to read how.

DO NOT ATEMPT THIS unless you are already a PRO at soldering or you will kill your ps2 , this is new and im sure will need perfected a bit .
Notes:
It runs fine with HD Advance from CD.
In his test environment he desoldered the little pull down resistor networks and the resistor at pin #27, but this is not needed perhaps... still needs to be tested further.

Known Bugs:
In his tests HDA wants to format HDD every time when you switch on the PSTwo, but he used long 40 conductor IDE cable not shielded! Maybe short 80 wire conductor shielded cable could fix that problem though.

This hack was originally discovered by Automan and all credit should be directed towards him.

This is the schematic for the IDE cable:

This is the installation diagram.